Apparatus for making paper bags



(No Model.) 4 Sheets-Sheet I.

W. H. PATTERSON.

APPARATUS FOR MAKING PAPER BAGS.

No. 450,710. Patented Apr. 21, 1891..

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(No Model.) 4 Sheets-Sheet 2.

W. H. PATTERSON. APPARATUS FOR MAKING PAPER BAGS.-

.No. 450,710. Patented Apr. 21, 1891.

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PAPER BAGS; PatentedApr. 21,1891.

(No Model.)

W. H. PATTER APPARATUS FOR MAKING No. 450,710.

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No. 450,710. Patented Apr. 21, 1891.

VITE STATES PATENT OFFICE.

\VILLIAM II. PATTERSON, OF OUYAI-IOGA FALLS, OHIO.

APPARATUS FOR MAKING PAPER BAGS.

SPECIFICATION forming part of Letters Patent No. 450,710, dated April 21, 1891.

Application filed August 23, 1890. Serial No. 362,822. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM H. PATTER- SON, a citizen of the United States, residing at Ouyahoga Falls, in the county of Summit and State of Ohio, have invented a certain new and useful Apparatus for Making Paper Bags, of which the following is a specification.

The object of my invention is to provide mechanism by which the successive steps necessary to form a bag from a continuous paper tube may be conducted automatically by a machine.

To the aforesaid purpose my invention consists of the peculiar and novel construction, arrangement, and combination of parts here inafter described, and then specifically pointed out in the claims, reference being had to the accompanying drawings, forming a part of this specification.

In the accompanying drawings, in which similar letters of reference indicatelike parts, Figure l is a side elevation of my improved machine for making paper bags from continuous paper tubes, the gearing on the nearest side being removed and the shafts shown in section to more clearly exhibit the operative parts. Fig. 2 is a top elevation or plan of the same machine, the pasting tanks and rolls being omitted to avoid confusion of lines; Figs. 3, 4:, 5, 6, '7, and 8, enlarged details of parts of the machine hereinafter fully described, and Figs. 9, 10, ll, and 12 successive diagrams of the tube similarly enlarged in process of folding.

Hy invention will be best understood by first generally describing my machine and then showing in connection with the operation of its several parts the successive steps by which the bottom of the bag is made by reference to the diagrams of its formation.

Referring to the drawings, A is a suitable frame or housing in which are journaled a series of rolls B B, O O, D, E E, and F F, which rolls are, by means of a system of gearwheels shown in Fig. 2, caused to move in unison with the same speed, the rolls of the upper and lower sets moving, respectively, in the same direction, and all driven by alarger gear on a shaft G, bearing on one end a driving-pulley G and on the other a hand-Wheel G", by which the mechanism may be operated, when desired. The rolls B B are of the same diameter, the former having at its central portion a shallow groove 1) to receive the narrow part of the guide H, hereinafter described.

The guide II consists of a metallic plate, which to the right of and outside of the rolls B B is of suitable width to substantially fit the inside of the flattened tube I, Fig. 9, from which sections are cut, as hereinafter stated, to constitute the bags. The outer end of this guide extends to the tube-makin g mechanism, which, as it may be of any well-known or approved kind a'nd is not claimed in this application, has not been shown. At the rolls B 5 this guide is narrowed to pass through the groove b of the roll B and on the other side enlarged to the width of the bag at the line 9 10 of Fig. 10, and extendsnearly to the cen tral vertical line between the rolls 0 O.

In operation the paper tube I passes from the tube-making mechanism surrounding the guide II to the rolls B B, which, by reason of the groove 1) to receive the reduced part of the guide, press against each other and grasp the tube on each side of said groove and feed it forward to the rolls 0 O.

Figs. 3 and 4 show, respectively, an elevation and a transverse section at the line a; LU of Fig. 4 of the rolls 0 C. Mounted in the roll 0 is a longitudinal knife 0, which is preferably placed at an angle of about forty-five degrees with the radius of the roll, and whose edge projects slightly beyond its periphery, and from the ends of which and extending at a right angle backward are two knives c 0, whose edges extend similarly beyond the periphery of the roll, and are concentric therewith, and are arranged to enter grooves in the roll C, the edges of all which knives are preferably serrated, as shown. The length of the knife 0 is the space J 10 of Fig. 10, and

that of the knives c 0 equal the length of.

the lines 7 9, 8 10. Between the rolls B B and O C is journaled a rock'shaft I, on which are mounted bell-cranks I, the horizontal ends of which toward the rolls C C are united by a bar 1 which passes under the guide II. Directly below the shaft I is journaled a shaft J, arranged by means of gears to move in unison with the rolls B O, and bearing near each end cam-wheels J arranged to engage the vertical ends of the bell-cranks I. These parts are so arranged that as the tube I passes between the rolls C C and at the instant the edge of the knife 0 passes the end of the guide H the cam-wheels J engage the lower end of the bell-cranks I and raise the guide H sufficiently to shear the upper sheet of the tube on the line 9 10, and as the tube moves forward the knives c 0 out both upper and lower sheets of the tube on the lines 7 9, 8 10. On the roll Oare narrow V-shaped ridges O, which as the tube is passing between the rolls 0 C crease fold-lines therein on the lines 2 3, 2 5, 3 4, 4 5, 4 11, 5 12. The tube thus cutand creased passes to the roll D, where paste is applied on the shaded part of Fig. 10 bya revolving paster D, (shown enlarged in front and end elevation in Figs. 7 and 8,) mounted on a shaft and revolving in unison with the roll D, and which takes paste from a wheel D", that in turn receives it from a wheel D that runs in a paste-tank D (See Fig. 1.) Attached to the front of the paster D are two knives 0 which enter grooves in the roll D and sever both sheets of the tube on the line 9 13 and 11 14 of Fig. 10 as the tube moves along. The tube now only adhering to its preceding part by the lower sheet on the line 9 10 passes over a smooth plate K to the rolls E E. J ournaled above this plate is a rock-shaft L, bearing on one end a crank-arm L, connected with a crank-wrist on a disk on the shaft of the roll F bya connecting-rod L, and by which means itis rocked. Mounted centrally on the shaft L is a folder M, consisting of a crank-arm with a curved foot m, arranged to swing so close to the plate K that the toe will engage the outside of the upper sheet of the tube substantially at the point 15 of Fig. 10, and which, swinging backward as the tube advances, folds the cut portions of the bag in the form shown in Fig. 11. Thus folded the tube passes between the rolls E E, where it is pressed at each side and paste is applied on the shaded lines shown in Fig 11 by a paster F (shown enlarged in end and frontelevation in Figs. 5 and 6,) whose operation is similar to the paster D, and which in the same manner receives paste from the paste-tank F by means of the wheels F and F Thence it passes between the rolls F F, where a knife fiattached to the former and entering agroove in the latter, severs the remaining part of the tube at the line 15 16 of Fig. 11. It then The shafts Q Q Q Fig. 1, are simply for idlers to transmit motion between adjacent rolls.

I am aware that several of the devices embodied in the mechanism hereinbefore described are not in themselves new, and such I do not claim; but

What I do claim, and desire to secure by Letters Patent, is

1. In a machine for making bottoms for paper bags on the advancing end of a continuous tube, the combination, with the guide H, provided with mechanism to swing ts outer end upward, of the rolls 0, arranged to move in unison with the forward motion of the tube and being provided with a knife 0, arranged to be brought in juxtaposition with the end of the guide H at the moment of its upward movement to partially shear the upper ply of the tube, substantially as shown and described.

2. In a machine for making bottoms for paper bags on the advancing end of a continuous tube, the combination, with a support for the tube, of a reciprocating folder arranged to engage the outside of the upper ply near its end after it has been partially severed and turn it back on the fold-lines, substantially as shown and described.

3. In a machine for making paperbags from a continuous tube, the combination, with the guide H, rolls B B and O O, the roll 0 provided with knives a a and the roll 0 with ridges 0'', together with the pasting and cutting device D, of the folder M, pasting device F", cutting device f, and folder 0, all constructed and arranged substantially as shown, and for the purpose specified.

In testimony that I claim the above I hereunto set my hand.

WILLIAM II. PATTERSON.

In presence of O. P. HUMPHREY, O. E. HUMPHREY. 

